cushman



(No Model.)

W. A. GUSHMAN. IRON RAILWAY GAR.

No. 243,762. Patented July 5-, 1881.

UNITED STATES PATENT OFFICE.

WILLIAM A. OUSHMAN, OF PROVIDENCE, RHODE ISLAND.

IRON RAILWAY-CA R.

SPECIFICATION forming part of Letters Patent No. 243,762, dated July 5, 1881.

Application filed May 19, 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM A. GUsn AN, of Providence, in the State of Rhode Island, have invented an Improvement in Tubular Iron Railway-Oars, of which the following is a specification.

In Letters Patent No. 236,786 an iron platform for cars is shown with tubes that are united bybands, and there are braces of iron passing down beneath a cross-bearer below the tubes, and in an allowed application the transom-beam and end beam are made of angle or E iron and the tubes united by hubs.

My present invention is animprovement upon the aforesaid invention, and relates to a means for clamping the tubes very firmly, so as to prevent the bands slipping or becoming loose upon the tubes; also, to the manner of attaching the ends of the tubes to the end bearers, and to the manner of forming the transombeam and of constructing the cross-bearer for the diagonal braces.

In the drawings, Figure 1 is a longitudinal elevation of part of the platform, the tubes at the ends being in section. Fig. 2 is acrosssection at the line as a". Fig. 3 is an elevation, in larger size, of the clamping-band; and Fig. 4is a view of clamp at right angles to Fig. 3.

There are to be two tubes, a a, one above the other, extending from end to end-of the platform, and such a pair of tubes is placed at each side of the platform, and as many intermediate ranges as may be necessary for obtaining the desired strength. Usually there will be six pairs of these tubes. At the ends of the platform the tubes are to be united to angleiron sills b by the hubs, as in my aforesaid application, or in any other convenient manner. I have shown sockets 0 c with internal screwthreads to receive within them the threaded ends of the tubes, and these sockets are to be of malleable iron or other metal and provided with bolts or rivets d, passing through the end sill, b, and secured by nuts. This mode of construction allows the parts to be put together with great facility, and by providing a, shaped sill with the flanges outwardly a recess is formed for the reception of the projecting safety-blocks f, which are to be of wood or other material.

The transom-beam is preferably made of two E-shaped bars, h, that pass transversely between the tubes at a, and are set back to back and bolted to the clip-bands, and these transverse beams receive the center plates for the king-bolts of the trucks.

One of my special features of improvement relates to the malleable-iron or steel clips i 2', formed of two short cylinders, 3 8, at the ends of and connected by a bar, 4, and the cylinders and bar are formed with forks or splits at 5, through which pass the transversebolts l. The cylinders 3 3 are of a size that allows them to be slipped over the tubes to the proper places, after which the bolts 1 are screwed up so firmly as to partially close the splits and clamp the tubes in the most firm and reliable manner. The bar 4, at the middle portion, may be X- shaped sectionally, orof any other desired form, so as to possess the requisite strength and lightuess.

The diagonal braces m pass from the end sills over the transom-beams and beneath a cross-beam, 42, below the tubes a. This may be similar to that shown in my aforesaid patent; but I prefer and use a cross-bearer of metal at the lower ends of downwardly-extendin g struts 19, which are prolongations of the clips 6 i, and

preferably of the same metal, and each crossbearer a is made of a metal tube passed into the lower ends of the said struts 19, into which it may be secured by wedges, cross-pins, or by being screwed into the cylinders 6 of the struts. There may be two, three, or more of these 1ongitudinal diagonal braces in the car-platform.

I claim as my invention- 1. The combination, with the longitudinal iron tubes in a car-platform, of the clips it, having cylindrical ends for the reception of the tubes at a, and forked or split, and the bolts 1 to tighten the clamps upon the tubes, substantially as set forth.

2. In a car-platform, the clips 1' t and the struts p, in combination with the tubes a a and the cross-bearer n and braces m, substantially as set forth.

Signed by me this 11th day of May, A. D. m 1881.

WM. A. (JUSHMAN.

Witnesses D. B. POTTER, H. L. BAKER. 

